The 60-second troubleshooting challenge
One motor that won’t start.
One open circuit. Can you find it?
Get ready to troubleshoot
One open circuit. You have 60 seconds.
Your mission
Trace it. Test it. Call it.
- 01Read the situation
START is held in, but contactor M won’t pull in. Exactly one component or the return wire is open.
- 02Take your readings
Black lead stays on X2 (neutral). Tap a numbered test point to place the red lead and read the meter.
- 03Find the open
Select That’s the fault beside the failed part. Each wrong guess costs 10 seconds.
No account needed.
A new fault each round.
Practice here. Follow procedures on the job. This simulates live voltage testing on a 120 V control circuit. On real equipment: only a qualified person, with a rated meter, the right PPE and your site’s procedures.
Motor control / 120 V AC
Find the break in the circuit
Fault located
What the readings mean
Practice lockout/tagout, wiring and motor controls in the guided motor starter lesson. Play right in your browser. No account needed to try it.
The time to beat
Leaderboard
Fastest 10 times. Scores include wrong-guess penalties. Just for fun—not a skills qualification.
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A simplified training simulation. It complements site-specific procedures, practical evaluation and employer authorization.